Stabilizing Layered Oxide Cathodes Based on Universal Surface Residual Alkali Conversion Chemistry for Rechargeable Secondary Batteries

Advanced Materials, Год журнала: 2025, Номер unknown

Опубликована: Янв. 23, 2025

Layered transition metal oxides (LTMOs) are attractive cathode candidates for rechargeable secondary batteries because of their high theoretical capacity. Unfortunately, LTMOs suffer from severe capacity attenuation, voltage decay, and sluggish kinetics, resulting irreversible lattice oxygen evolution unstable cathode-electrolyte interface. Besides, accumulate surface residual alkali species, like hydroxides carbonates, during synthesis, limiting practical application. Herein, a universal strategy is suggested to in situ convert into stable polymer coating layer LTMOs, thus turning wastes treasure. The formation process involves NH4F treatment consume alkali, then utilizing generated fluorides induce the ring-opening polymerization tetrahydrofuran. Implementing this Li-rich Mn-based materials (LRM) results notable reduction hysteresis, along with enhanced kinetics cycling stability lithium-ion batteries. With encapsulation, release layered-to-spinel phase LRM significantly alleviated minimal mechanical degradation parasitic reactions. Such can also be applied air-sensitive sodium-rich sodium-ion batteries, which showcases superior universality. This work might provide promising solution overcome interfacial instability issues

Язык: Английский

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Current issues and corresponding optimizing strategies of layered oxide cathodes for sodium‐ion batteries

InfoMat, Год журнала: 2025, Номер unknown

Опубликована: Март 10, 2025

Abstract Lithium‐ion batteries (LIBs) have dominated the market for a long time. However, scarcity of lithium resources has sparked concerns about future energy storage devices, leading many researchers to turn their attention other such as sodium‐ion (SIBs), potassium‐ion (KIBs), zinc‐ion (ZIBs), and so on. Among them, SIBs attracted widespread from due abundant sodium resources, high safety, excellent low‐temperature performance. Because cathode battery determines density, cycle life, charge/discharge rate, cost, research on cathodes is particularly important. Layered oxide cathodes, with periodic layered structure, good electrical conductivity, two‐dimensional ion transport channels, are regarded most promising materials SIBs. Currently, main issues facing include irreversible phase transitions, air sensitivity, insufficient surface residual alkali, migration dissolution transition metals. The key solving these problems lies in development new generation high‐performance cathodes. Hence, we review current progress various optimizing strategies, finally summarize provide an outlook trends image

Язык: Английский

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A three-in-one Ti3C2Tx MXene additive for low-temperature ultrathick electrodes

Science China Materials, Год журнала: 2025, Номер unknown

Опубликована: Март 27, 2025

Язык: Английский

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An overview of the modification strategies for P2-Na2/3Ni1/3Mn2/3O2 cathode for sodium ion batteries

Sustainable materials and technologies, Год журнала: 2024, Номер 41, С. e01059 - e01059

Опубликована: Июль 24, 2024

Язык: Английский

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Unlocking the high-capacity operation of P2-type cathode through bifunctional spectator ions substitution

Journal of Power Sources, Год журнала: 2024, Номер 613, С. 234925 - 234925

Опубликована: Июнь 25, 2024

Язык: Английский

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Unlocking the High-Capacity Operation of P2-Type Cathode Through Bifunctional Spectator Ions Substitution

Опубликована: Янв. 1, 2024

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Язык: Английский

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Anionic redox in layered oxide cathodes for sodium ion batteries: Triggering, degradation and modification

Journal of Energy Storage, Год журнала: 2024, Номер 102, С. 114212 - 114212

Опубликована: Окт. 19, 2024

Язык: Английский

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